Cell wall - Prokaryotic cell walls

A cell wall is a more or less solid layer surrounding a cell. They are found in bacteria, archaea, fungi, plants, and algae. Animals and most other protists have cell membranes without surrounding cell walls. When a cell wall is removed using cell wall degrading enzymes, what is left of the cell and its surrounding plasma membrane is called a protoplast. The cell walls main purpose is to actually protect the interior from any physical movement that may damage the cell.. Cell wall - Plant cell walls. Plant c ...

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• Cell wall - Plant cell walls
• Cell wall - Composition of plant cell walls
• Cell wall - Algal cell walls
• Cell wall - Diatom cell walls
• Cell wall - Prokaryotic cell walls
• Cell wall - Fungal cell walls
• Cell wall - Pictures

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Cell walls of bacteria are primarily used for protection against hostile environments or, in the case of pathogenic bacteria, against the immune system of the host. They contain peptidoglycan, which can be made visible in Gram-positive bacteria by Gram staining. The cell walls of bacteria are also vital for containing the high osmotic pressure inside bacterial cells caused by the high concentration of solutes in the cytoplasm. This pressure can often be as high as 15 atmospheres. Many antibiotics, including penicillin an ...

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Cell wall, Cell wall - Plant cell walls, Cell wall - Composition of plant cell walls, Cell wall - Algal cell walls, Cell wall - Diatom cell walls, Cell wall - Prokaryotic cell walls, Cell wall - Fungal cell walls, Cell wall - Pictures

Read more here: » Cell wall: Encyclopedia II - Cell wall - Prokaryotic cell walls

Plant cell walls have a number of functions: they provide rigidity to the cell for structural and mechanical support, maintaining cell shape, the direction of cell growth and ultimately the architecture of the plant. The cell wall also prevents expansion when water enters the cell. The term turgor is used to describe this pressure that is induced by excess water inside the plant cell. Cell walls protect against pathogens and the environment and are a store of carbohydrates for the plant. The cell wall is constructed primarily ...

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Cell wall, Cell wall - Plant cell walls, Cell wall - Composition of plant cell walls, Cell wall - Algal cell walls, Cell wall - Diatom cell walls, Cell wall - Prokaryotic cell walls, Cell wall - Fungal cell walls, Cell wall - Pictures

Read more here: » Cell wall: Encyclopedia II - Cell wall - Plant cell walls

Like plants, algae have cell walls (Sendbusch, 2003). Algal cell walls contain cellulose and a variety of glycoproteins. The inclusion of additional polysaccharides in algal cells walls is used as a feature for algal taxonomy. Manosyl form microfibrils in the cell walls of a number of marine green algae including those from the genera, Codium, Dasycladus, and Acetabularia as well as in the walls of some red algae, like Porphyra and Bangia. Xylanes Alginic acid is a common poly ...

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Cell wall, Cell wall - Plant cell walls, Cell wall - Composition of plant cell walls, Cell wall - Algal cell walls, Cell wall - Diatom cell walls, Cell wall - Prokaryotic cell walls, Cell wall - Fungal cell walls, Cell wall - Pictures

Read more here: » Cell wall: Encyclopedia II - Cell wall - Algal cell walls

Not all species of fungi have cell walls but in those that do, the cell walls are composed of cellulose, glucosamine, and chitin, the same carbohydrate that gives strength to the exoskeletons of insects. They serve a similar purpose to those of plant cells, giving fungal cells rigidity and strength to hold their shape and preventing osmotic lysis. It also limits the entry of molecules that may be toxic to the fungus, like plant-produced and synthetic fungicides. The composition, properties, and form of the fungal cell wall change during ...

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Cell wall, Cell wall - Plant cell walls, Cell wall - Composition of plant cell walls, Cell wall - Algal cell walls, Cell wall - Diatom cell walls, Cell wall - Prokaryotic cell walls, Cell wall - Fungal cell walls, Cell wall - Pictures

Read more here: » Cell wall: Encyclopedia II - Cell wall - Fungal cell walls

Like plants, algae have cell walls (Sendbusch, 2003). Algal cell walls contain cellulose and a variety of glycoproteins. The inclusion of addition polysaccharides in algal cells walls is used as a feature for algal taxonomy. Manosyl form microfibrils in the cell walls of a number of marine green algae including those from the genera, Codium, Dasycladus, and Acetabularia as well as in the walls of some red algae, like Porphyra and Bangia. Xylanes Alginic acid is a common polysa ...

See also:

Cell wall, Cell wall - Plant cell walls, Cell wall - Composition of plant cell walls, Cell wall - Algal cell walls, Cell wall - Diatom cell walls, Cell wall - Prokaryotic cell walls, Cell wall - Fungal cell walls, Cell wall - Pictures

Read more here: » Cell wall: Encyclopedia II - Cell wall - Algal cell walls